If you are using large posts I would recommend blunts if you can drive
them in your soil. I bought a load of 5 to 6" 8' posts that are pointed.
The problem is, they are heavy enough that once you turn them up on
the pointed end they dig into the soil just by virute of their weight, and it
becomes a chore to get the bottom aligned underneath the postdriver.
While I'm thinking of it, this is a big consideration when it comes to driving
round posts with the Worksaver/Shaver design, that is a where the post
rests in a square channel in the ram. It takes some practice to get the posts
to go in just right. I was very concerned with appearance and I may be
deflecting off of the copious rocks in my soil. If you are just looking to
get lots of posts in fast, then maybe this doesn't matter so much. I
suspect 3 to 4" posts driver better too, though I haven't tried them yet.
Another thing to keep in mind is that the post will tend to lean towards
the tractor. The Worksaver manual recommends that you cheat a little
bit, and this is good advice. Also, if the post starts leaning left, you move
the top of the ram to the _right_, so that the right edge of the ram channel
moves the post back to the left. I mention this because it's opposite of
what you would do with a hammer. Maybe a good way to state this in
just a few words is: do your least visible post line first!
If I remember right, the Danuser has a round channel to hold the post.
Anyone who has experience with this please let me know how it is for
driving posts straight.